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Ampolla de Klein (Catalan Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ampolla de Klein" in Catalan language version.

refsWebsite
Global rank Catalan rank
1google.cat
1,849th place
2nd place
1wolfram.com
513th place
202nd place

google.cat

books.google.cat

  • Pascual Gainza, Pere; Roig Martí, Agustí. Topologia. Edicions UPC, 2004 [Consulta: 1r desembre 2009]. 

wolfram.com

mathworld.wolfram.com

  • Weisstein, Eric W. «Klein Bottle». WolframMathWorld. [Consulta: 1r desembre 2009].